Typical September highs at Rio Del Mar Beach reach about 75°F, with reliable beach weather July to September. Rio Del Mar Beach is located in Santa Cruz, California.
Santa Cruz, California · live parking & conditions · updated June 19, 2026
In a typical year September is the warmest month here, with highs near 75°F, and it's reliably beach weather July to September. Tap Rio Del Mar Beach on the map for live surf, wind, water temperature, UV and tide times.
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